We used to run the I-LAP system and there were a few racers who had trackmate transponders,they didn't work on the I-LAP system.
If you are buying one of these systems ,go with the I-LAP .One of the draw backs to the trackmate is a limited number of transponders .While the I-lap is like a AMB/MYLAPS ,infinite number of pt's.Trackmate may have changed this ,you would have contact them

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